Ectocarpus arabicus   Figari & De Notaris,  1853; James et al., 1987
Class: Phaeophyceae

Color: Brownish-white tufts.

Plant tufts 3-5 mm in height. Basal system composed of branched filamentous rhizoids. Cells of the rhizoids 50-180 µ long and 18-20 µ broad. Erect system composed of main filament, poorly branched in the lower region but profusedly branched in the upper region. Branching at first more or less monopodial, irregular later, branches becoming thinner upwards. Cells of the filaments provided with roundish, discoid chromatophores, 50-250 µ long and 26-50 µ broad. Intercalary meristem situated at the bases of the ultimate laterals, and that of the main filament and its primary lateral situated in the middle.

Plants bearing both unilocular and plurilocular sporangia; the former mainly restricted to the upper portion of the filaments, often in a row of 2-4, arising laterally, sessile and oval 50-76 µ long and 33-40 µ broad. Plurilocular sporangia axillary or scattered on the filaments, sessile as a rule; ovate-oblong or conical in shape, 80-120 µ long and 30-40 µ broad.

Plants epiphytic on the leaves of Sargassum tenerrimum.

• Gujarat, Dwarka ( Lat = 22.235855 ) ( Long = 68.962944 ) INDIA
• Gujarat, Porbandar ( Lat = 21.631161 ) ( Long = 69.601776 ) INDIA
• Tamil Nadu, Tuticorin ( Lat = 8.800844 ) ( Long = 78.159981 ) INDIA

Economic Importance and Threats


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Literature Source(s)
  • Society for the Management of European Biodiversity Data (2009) World Register of Marine Species (WoRMS) Available at -
  • Mishra, JN (1966) Phaeophyceae in India ICAR 203 pp Available at - NIO, Goa

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